This article takes stock of some of the important contributions to the study of peacekeeping (PK). Two key topics stand out: peacekeeping burden sharing and mission effectiveness. For burden sharing, the theoretical foundation is the private provision of public goods and joint products. Implications for burden sharing differ whether financial or troop contributions are being shared, with the latter driven by jointly produced country-specific benefits. Financial burden sharing can also differ between United Nations (UN)-led and non-UN-led peacekeeping operations, wherein country-specific benefits are especially important for the latter. Many articles gauge peacekeeping effectiveness by the mission's ability to maintain the peace or to protect lives for a set time period. More recently, multiple criteria are raised for evaluating peacekeeping in today's world of multifaceted peace-building operations.
This paper provides the first venue-based empirical investigation of the number and lethality of suicide terrorist attacks on a global scale. For 1998-2010, we assemble a data set of 2448 suicide terrorist incidents, drawn from the three main terrorist event databases, i.e., International Terrorism: Attributes of Terrorist Events (ITERATE), the Global Terrorism Database (GTD), and RAND. Our data set distinguishes between domestic and transnational suicide terrorist missions. For the quantity of suicide terrorism, we apply zero-inflated negative binomial panel (country-year) estimation for country-specific variables and negative binomial panel estimation for attack-specific variables. We also present linear regression panel estimations for the impact of suicide terrorism in terms of casualties per attack. Economic, political, and military variables, at times, differentially influenced the two kinds of suicide terrorism. A host of policy conclusions are drawn from the empirical findings.